Wanted to add, the motor is 8 wired, wired in Bi Polar parallel.

This is the motor.

https://www.cnc4you.co.uk/Stepper-Mo...?search=nema34

The specsheet here - https://cnc4you.co.uk/resources/Step...1%2012.5Nm.pdf

Based on my current gearing the motor runs around 1600 RPM to achieve 4000 mm/min (I need to double check the gearing). Does anyone know what max RPM could be, nothing declared on the motor. I can email and ask the supplier but if I gear down some more, whilst 4000 mm/min is less important than stability, its nice to have high rapid rate on a large machine.

Thanks